I have had the some experience with the remote locking on my 1990 735iL. It works, BUT I have to point the remote at EXACTLY the right spot on the car. I've also noticed that I need to hold the button on the remote down to get results. A quick push will not get the job done. Having to hold the button down while aiming carefully at the right spot on the car is too much for my un-coordinated body to handle. That, plus the remote being too bulky in my pocket has lead me to just leave the thing at home and lock with the key in the driver's door.